arch/arm/mach-pxa/cm-x255.c

   1 /*
   2  * linux/arch/arm/mach-pxa/cm-x255.c
   3  *
   4  * Copyright (C) 2007, 2008 CompuLab, Ltd.
   5  * Mike Rapoport <mike@compulab.co.il>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/platform_device.h>
  13 #include <linux/irq.h>
  14 #include <linux/gpio.h>
  15 #include <linux/mtd/partitions.h>
  16 #include <linux/mtd/physmap.h>
  17 #include <linux/mtd/nand-gpio.h>
  18
  19 #include <linux/spi/spi.h>
  20
  21 #include <asm/mach/arch.h>
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/map.h>
  24
  25 #include <mach/pxa2xx-regs.h>
  26 #include <mach/mfp-pxa25x.h>
  27 #include <mach/pxa2xx_spi.h>
  28 #include <mach/bitfield.h>
  29
  30 #include "generic.h"
  31
  32 #define GPIO_NAND_CS    (5)
  33 #define GPIO_NAND_ALE   (4)
  34 #define GPIO_NAND_CLE   (3)
  35 #define GPIO_NAND_RB    (10)
  36
  37 static unsigned long cmx255_pin_config[] = {
  38         /* AC'97 */
  39         GPIO28_AC97_BITCLK,
  40         GPIO29_AC97_SDATA_IN_0,
  41         GPIO30_AC97_SDATA_OUT,
  42         GPIO31_AC97_SYNC,
  43
  44         /* BTUART */
  45         GPIO42_BTUART_RXD,
  46         GPIO43_BTUART_TXD,
  47         GPIO44_BTUART_CTS,
  48         GPIO45_BTUART_RTS,
  49
  50         /* STUART */
  51         GPIO46_STUART_RXD,
  52         GPIO47_STUART_TXD,
  53
  54         /* LCD */
  55         GPIO58_LCD_LDD_0,
  56         GPIO59_LCD_LDD_1,
  57         GPIO60_LCD_LDD_2,
  58         GPIO61_LCD_LDD_3,
  59         GPIO62_LCD_LDD_4,
  60         GPIO63_LCD_LDD_5,
  61         GPIO64_LCD_LDD_6,
  62         GPIO65_LCD_LDD_7,
  63         GPIO66_LCD_LDD_8,
  64         GPIO67_LCD_LDD_9,
  65         GPIO68_LCD_LDD_10,
  66         GPIO69_LCD_LDD_11,
  67         GPIO70_LCD_LDD_12,
  68         GPIO71_LCD_LDD_13,
  69         GPIO72_LCD_LDD_14,
  70         GPIO73_LCD_LDD_15,
  71         GPIO74_LCD_FCLK,
  72         GPIO75_LCD_LCLK,
  73         GPIO76_LCD_PCLK,
  74         GPIO77_LCD_BIAS,
  75
  76         /* SSP1 */
  77         GPIO23_SSP1_SCLK,
  78         GPIO24_SSP1_SFRM,
  79         GPIO25_SSP1_TXD,
  80         GPIO26_SSP1_RXD,
  81
  82         /* SSP2 */
  83         GPIO81_SSP2_CLK_OUT,
  84         GPIO82_SSP2_FRM_OUT,
  85         GPIO83_SSP2_TXD,
  86         GPIO84_SSP2_RXD,
  87
  88         /* PC Card */
  89         GPIO48_nPOE,
  90         GPIO49_nPWE,
  91         GPIO50_nPIOR,
  92         GPIO51_nPIOW,
  93         GPIO52_nPCE_1,
  94         GPIO53_nPCE_2,
  95         GPIO54_nPSKTSEL,
  96         GPIO55_nPREG,
  97         GPIO56_nPWAIT,
  98         GPIO57_nIOIS16,
  99
 100         /* SDRAM and local bus */
 101         GPIO15_nCS_1,
 102         GPIO78_nCS_2,
 103         GPIO79_nCS_3,
 104         GPIO80_nCS_4,
 105         GPIO33_nCS_5,
 106         GPIO18_RDY,
 107
 108         /* GPIO */
 109         GPIO0_GPIO      | WAKEUP_ON_EDGE_BOTH,
 110         GPIO9_GPIO,                             /* PC card reset */
 111
 112         /* NAND controls */
 113         GPIO5_GPIO      | MFP_LPM_DRIVE_HIGH,   /* NAND CE# */
 114         GPIO4_GPIO      | MFP_LPM_DRIVE_LOW,    /* NAND ALE */
 115         GPIO3_GPIO      | MFP_LPM_DRIVE_LOW,    /* NAND CLE */
 116         GPIO10_GPIO,                            /* NAND Ready/Busy */
 117
 118         /* interrupts */
 119         GPIO22_GPIO,    /* DM9000 interrupt */
 120 };
 121
 122 #if defined(CONFIG_SPI_PXA2XX)
 123 static struct pxa2xx_spi_master pxa_ssp_master_info = {
 124         .num_chipselect = 1,
 125 };
 126
 127 static struct spi_board_info spi_board_info[] __initdata = {
 128         [0] = {
 129                 .modalias       = "rtc-max6902",
 130                 .max_speed_hz   = 1000000,
 131                 .bus_num        = 1,
 132                 .chip_select    = 0,
 133         },
 134 };
 135
 136 static void __init cmx255_init_rtc(void)
 137 {
 138         pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
 139         spi_register_board_info(ARRAY_AND_SIZE(spi_board_info));
 140 }
 141 #else
 142 static inline void cmx255_init_rtc(void) {}
 143 #endif
 144
 145 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
 146 static struct mtd_partition cmx255_nor_partitions[] = {
 147         {
 148                 .name           = "ARMmon",
 149                 .size           = 0x00030000,
 150                 .offset         = 0,
 151                 .mask_flags     = MTD_WRITEABLE  /* force read-only */
 152         } , {
 153                 .name           = "ARMmon setup block",
 154                 .size           = 0x00010000,
 155                 .offset         = MTDPART_OFS_APPEND,
 156                 .mask_flags     = MTD_WRITEABLE  /* force read-only */
 157         } , {
 158                 .name           = "kernel",
 159                 .size           = 0x00160000,
 160                 .offset         = MTDPART_OFS_APPEND,
 161         } , {
 162                 .name           = "ramdisk",
 163                 .size           = MTDPART_SIZ_FULL,
 164                 .offset         = MTDPART_OFS_APPEND
 165         }
 166 };
 167
 168 static struct physmap_flash_data cmx255_nor_flash_data[] = {
 169         {
 170                 .width          = 2,    /* bankwidth in bytes */
 171                 .parts          = cmx255_nor_partitions,
 172                 .nr_parts       = ARRAY_SIZE(cmx255_nor_partitions)
 173         }
 174 };
 175
 176 static struct resource cmx255_nor_resource = {
 177         .start  = PXA_CS0_PHYS,
 178         .end    = PXA_CS0_PHYS + SZ_8M - 1,
 179         .flags  = IORESOURCE_MEM,
 180 };
 181
 182 static struct platform_device cmx255_nor = {
 183         .name   = "physmap-flash",
 184         .id     = -1,
 185         .dev    = {
 186                 .platform_data = cmx255_nor_flash_data,
 187         },
 188         .resource = &cmx255_nor_resource,
 189         .num_resources = 1,
 190 };
 191
 192 static void __init cmx255_init_nor(void)
 193 {
 194         platform_device_register(&cmx255_nor);
 195 }
 196 #else
 197 static inline void cmx255_init_nor(void) {}
 198 #endif
 199
 200 #if defined(CONFIG_MTD_NAND_GPIO) || defined(CONFIG_MTD_NAND_GPIO_MODULE)
 201 static struct resource cmx255_nand_resource[] = {
 202         [0] = {
 203                 .start = PXA_CS1_PHYS,
 204                 .end   = PXA_CS1_PHYS + 11,
 205                 .flags = IORESOURCE_MEM,
 206         },
 207         [1] = {
 208                 .start = PXA_CS5_PHYS,
 209                 .end   = PXA_CS5_PHYS + 3,
 210                 .flags = IORESOURCE_MEM,
 211         },
 212 };
 213
 214 static struct mtd_partition cmx255_nand_parts[] = {
 215         [0] = {
 216                 .name   = "cmx255-nand",
 217                 .size   = MTDPART_SIZ_FULL,
 218                 .offset = 0,
 219         },
 220 };
 221
 222 static struct gpio_nand_platdata cmx255_nand_platdata = {
 223         .gpio_nce = GPIO_NAND_CS,
 224         .gpio_cle = GPIO_NAND_CLE,
 225         .gpio_ale = GPIO_NAND_ALE,
 226         .gpio_rdy = GPIO_NAND_RB,
 227         .gpio_nwp = -1,
 228         .parts = cmx255_nand_parts,
 229         .num_parts = ARRAY_SIZE(cmx255_nand_parts),
 230         .chip_delay = 25,
 231 };
 232
 233 static struct platform_device cmx255_nand = {
 234         .name           = "gpio-nand",
 235         .num_resources  = ARRAY_SIZE(cmx255_nand_resource),
 236         .resource       = cmx255_nand_resource,
 237         .id             = -1,
 238         .dev            = {
 239                 .platform_data = &cmx255_nand_platdata,
 240         }
 241 };
 242
 243 static void __init cmx255_init_nand(void)
 244 {
 245         platform_device_register(&cmx255_nand);
 246 }
 247 #else
 248 static inline void cmx255_init_nand(void) {}
 249 #endif
 250
 251 void __init cmx255_init(void)
 252 {
 253         pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx255_pin_config));
 254
 255         cmx255_init_rtc();
 256         cmx255_init_nor();
 257         cmx255_init_nand();
 258 }